body {
  background-color: rgb(0, 26, 121);
 }

.dark-mode {
   background-color: #ffffff;
   color: #fff;
 }
 
 .dark-mode button {
   /* height: 45px; */
   background-color: #000000;
   color: #fff;
 }
.dark-mode .slide {
  background-color: #0076ca;
  background-image: linear-gradient(#2980B9, #6DD5FA);
}